?? ????4.4?????????? ??10???
????:1?????????????:600???3?????
2???100??????
3???????
4?????????
5???????
??1??20? ?:1??20??????????21??59?(???29.57???,??????????104.88?)???4.4??,?10?????
?? ??:???????????????1??20? ?:1??20??????????21??59?(???29.57???,??????????104.88?)???4.4??,?10?????
?? ??:?????????????????:1?????????????:600???3?????
2???100??????
3???????
4?????????
5???????
??1??20? ?:1??20??????????21??59?(???29.57???,??????????104.88?)???4.4??,?10?????
?? ??:?????????????